Massage device.



No. 667,357. Patented Feb. 5, I90l. A. ANDBEAE. MASSAGE DEVICE.

(Application led May 9, 1900.)

(No Nudel.)

UNTTnTi STATES PATENT FFICE.

AUGUST ANDREAE, OFFRANKFORT-ON-THE-MAIN, GRMANY.

MAS SAG E DEVI-CE.

SPECIFICATION forming part of Letters Patent No. 667,357, dated February 5, 1901-.

Application led May 9, 1900.

To all whom it may concern:

Be it known that I, AUGUST ANDREAE, mechanical engineer, residing at Kirchnerstrasse No. 6, Frankfort-on-the-Main, in the Empire of Germany, have invented new and useful improvements in Massage Devices, (for which Letters Patent have been applied for in Germany, E. 6,949, lil/30, dated April l2, 1900,)of which the following is a specification.

My new massage device is of the well known type of devices having a quicklyrotating weight which transmits the shocks generated by its rotation to a case which is applied to the'V place of the body to be massaged.

My invention relates particularly to an easy and quick regulation of the effect without varying the number of revolutions. This is attained by varyin g the momentum imparting the shocks to the case by constructing it in two parts, which may be set with respect to each other to increase or to lessen the momentum of the shocks effected by the quick rotation. For this purpose two weights are fixed on concentric rotating shafts in a manner that the angular position of the two weights might be altered by turning the one shaft with respect to the other. If the two weights are at the ends of the two radial arms pointing in the same direction, the momentum of one is added to that of the other. If, however, they are placed opposite to each other, the momentum of one weight is reduced by that of the other. lIn every intermediate position a more or less strong effect will be obtained.

In order that my invention may be better understood, I have affixed drawings.

Figure l is a section through the device. Figs. 2 and 3 show the different positions of the weights.

a is a metal case having a handle b of hard rubber. The hollow shaft c is rotatably fixed at the case by its shoulder c and nut c". The metal globe CZ is fixed on an arm of the shaft d. f is the inner shaft,carryinga globe g. The shafts c and fare connected by a pin h engaging a slot e, which is in shape of a steep screw-thread. The shaft f is rotated by a iexible shaft t', connected with its end and driven by a motor.

If the shaft c is shifted with relation to Serial No. 16,000. (No modelj shaft f in the direction of its axis, the globes d and g will alter their angular position. For this purpose a uut Z is fixed to the handle b and receives a hollow spindle la, which may be turned by hand at its end m. As the shaft is rotatably connected with the screw-spindle Zt and cannot move axially with relation to -it, it may be axially shifted by turning the screw-spindle lo, and thereby the momentum of the shocks is altered without altering the speed or shutting ed the motion. The position representing the maximum momentum is indicated in dotted lines.

Now, what I claim, and desire to secure by Letters'Patent, is-

1. In a massage device, the combination of a plurality of rigidly-supported weights maintained at all times at a fixed distance from the center of rotation of said Weights, means to rotate the weights and means foradjusting the position of the weights with relation to each other and in the action of the device and means for maintaining the weights in such adj usted position during the rotation thereof, substantially as described.

2. In a massage device, the combination of a plurality of rotating .weights maintained at all times at a xed distance from the center of revolution of said weights with means for shifting the position of the Weights with rel'ation to each other and maintaining the same in the shifted position by turning the same relatively to each other around their axis of rotation in the action of the device, substantially as described.

3. In a massage device the combination of two rotating weights With a hollow and a solid concentric shaft xed to the weights re- Iooy fixed in the hollow shaft and connected with name to this specification in the presence of it by a transverse slot and pin and rotatably two subscribing witnesses. connected but locked affainst axial motion to a hollow screw-spindle z:uidecl in a nut xed l AUGUST ANDREAE' 5 to the handle of the device substantially'as Witnesses:

described. GUSTAV SPEISS,

In testimony whereof I have signed my CHARLES A. SGHUFF. 

